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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_COCOA_ANIMATABLE_IMAGE_H_
#define CHROME_BROWSER_COCOA_ANIMATABLE_IMAGE_H_
#pragma once
#import <Cocoa/Cocoa.h>
#import <QuartzCore/QuartzCore.h>
#include "base/scoped_nsobject.h"
// This class helps animate an NSImage's frame and opacity. It works by creating
// a blank NSWindow in the size specified and giving it a layer on which the
// image can be animated. Clients are free to embed this object as a child
// window for easier window management. This class will clean itself up when
// the animation has finished. Clients that install this as a child window
// should listen for the NSWindowWillCloseNotification to perform any additional
// cleanup.
@interface AnimatableImage : NSWindow {
@private
// The image to animate.
scoped_nsobject<NSImage> image_;
// The frame of the image before and after the animation. This is in this
// window's coordinate system.
CGRect startFrame_;
CGRect endFrame_;
// Opacity values for the animation.
CGFloat startOpacity_;
CGFloat endOpacity_;
// The amount of time it takes to animate the image.
CGFloat duration_;
}
@property (nonatomic) CGRect startFrame;
@property (nonatomic) CGRect endFrame;
@property (nonatomic) CGFloat startOpacity;
@property (nonatomic) CGFloat endOpacity;
@property (nonatomic) CGFloat duration;
// Designated initializer. Do not use any other NSWindow initializers. Creates
// but does not show the blank animation window of the given size. The
// |animationFrame| should usually be big enough to contain the |startFrame|
// and |endFrame| properties of the animation.
- (id)initWithImage:(NSImage*)image
animationFrame:(NSRect)animationFrame;
// Begins the animation.
- (void)startAnimation;
@end
#endif // CHROME_BROWSER_COCOA_ANIMATABLE_IMAGE_H_
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